dec_png.c File Reference

This program reads PNG stream data from memory. More...

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <png.h>

Go to the source code of this file.

Typedefs
typedef long	g2int
	Long Integer type. More...
typedef struct png_stream	png_stream
	location to write PNG stream More...

Functions
int	SUB_NAME (unsigned char *pngbuf, g2int *width, g2int *height, char *cout)
	create png_structs to write png stream into memory. More...
void	user_read_data (png_structp png_ptr, png_bytep data, png_uint_32 length)
	Custom read function used so that libpng will read a PNG stream from memory instead of a file on disk. More...

Detailed Description

This program reads PNG stream data from memory.

Author

Stephen Gilbert

Definition in file dec_png.c.

Typedef Documentation

g2int

typedef long g2int

Long Integer type.

Definition at line 15 of file dec_png.c.

png_stream

typedef struct png_stream png_stream

location to write PNG stream

Definition at line 39 of file dec_png.c.

Function Documentation

SUB_NAME()

int SUB_NAME	(	unsigned char *	pngbuf,
		g2int *	width,
		g2int *	height,
		char *	cout
	)

create png_structs to write png stream into memory.

Parameters

pngbuf	PNG buffer.
width	width.
height	height.
cout	number of bits.

Returns

0

Author

Stephen Gilbert

Definition at line 76 of file dec_png.c.

user_read_data()

void user_read_data	(	png_structp	png_ptr,
		png_bytep	data,
		png_uint_32	length
	)

Custom read function used so that libpng will read a PNG stream from memory instead of a file on disk.

Definition at line 43 of file dec_png.c.